Penumbra System
Payments companies reported to CMS as associated with Penumbra System. "Associated with" is CMS's wording: it links a payment to a product without saying the money was spent on it.
By year
Payments reported as associated with Penumbra System, per program year, as reported to CMS.
Who makes it
Specialties most often involved
Where the associated payments went, by the receiving clinician's specialty.
Clinicians most associated with Penumbra System
These are the largest totals companies reported as associated with Penumbra System. They are typically speaking or consulting arrangements, which companies must report by law; appearing here is not evidence of anything improper.
| Clinician | Location | Specialty | Associated payments (2023-2025) |
|---|---|---|---|
| Donald Frei | Englewood, CO | Diagnostic Radiology | $236,087.55 |
| Thinesh Sivapatham | Newark, DE | Diagnostic Radiology | $96,100.78 |
| Albert Yoo | Boston, MA | Diagnostic Radiology | $86,599.36 |
| Alejandro Spiotta | Charleston, SC | Neurological Surgery | $61,562.20 |
| Allison Strickland | Jackson, MS | Neurological Surgery | $47,203.12 |
| Gabriel Vidal | New Orleans, LA | Vascular Neurology | $44,318.33 |
| Robert Starke | Miami, FL | Neurological Surgery | $35,174.38 |
| Orlando Diaz | Houston, TX | Vascular & Interventional Radiology | $35,140.07 |
| Ryan Hebert | New Haven, CT | Neurological Surgery | $33,466.76 |
| Ashish Nanda | Fullerton, CA | Vascular Neurology | $32,014.79 |
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Source: CMS Open Payments, program years 2019-2025, as reported to CMS by drug and device makers (published June 30, 2026). Drug and device detail covers 2023-2025.